Javier Waitzel

Buenos Aires, Argentina

Member since February 24, 2014

Javier is a top engineer and entrepreneur who is passionate about new technologies and software development. He has experience in mobile application design and development, and he's worked extensively with multidisciplinary teams bringing innovative ideas to every project.

Javier is now available for hire

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Portfolio

Esqulilax Games
iOS, OS X, OpenGL-ES, Objective-C, Unity, C#
PocketGM (via Toptal)
Swift, Objective-C, iOS, Facebook SDK
Ceevoo (via Toptal)
Swift, Parse, Bluetooth Low Energy

Experience

iOS SDK, 4 years
Objective-C, 4 years
iOS, 4 years
Xcode, 4 years
Unity, 1 year
C#, 1 year

Availability

Part-time

Preferred Environment

Xcode, Objective-C, iOS, OS X, Unity, C#, Git

The most amazing...

...thing i've built is an Arduino-server iOS project to unlock doors when in close proximity that works smoothly.

Employment

Co-Founder, Developer
Esqulilax Games
2010 - PRESENT
- Migrated an Objective-C project to Unity.
- Created an OpenGL-based graphics engine supporting 2D and 3D rendering.
- Designed a custom level creation tool for the app "Climber Brothers".
- Developed several iOS Games (”Climber Brothers”, “Battle Rush”, “Chinchon”, “Escoba de 15”).
- Integrated a physics engine (Box2D) using C++.
- Created a .OBJ (3D models) loader and parser for rendering 3D meshes.
- Developed the AI for card games featuring a variable level of skill.
- Added support for sharing content on social networks in all of the company's games.
- Incorporated SVG support for curve creation and terrain design.
- Created a smoothing algorithm using SVG curves and approximation.
- Designed and implemented a PVP (Player vs Player) multiplayer environment for a battle game.
- Developed a server-client framework for displaying animations simultaneously on different devices.
Technologies: iOS, OS X, OpenGL-ES, Objective-C, Unity, C#
iOS Engineer
PocketGM (via Toptal)
2015 - 2015
- Created an iOS app to manage all your fantasy teams from different providers in once place.
- Supported login using different 3rd party services (Facebook, Twiter, Google).
- Implemented views with code using Masonry (AutoLayout framework) supporting all iPhone screen sizes.
- Collaborated with the design team and created some reusable views to make a consistent UI.
- Supported continuous integration, code coverage, crash reports, and analytics frameworks.
Technologies: Swift, Objective-C, iOS, Facebook SDK
iOS Engineer
Ceevoo (via Toptal)
2015 - 2015
- Built an app for discovering nearby users using iBeacons (BLE).
- Enhanced "Universal" app experience for iOS using Size Classes.
- Used Core Bluetooth and Core Location simultaneously for advertising and discovering users.
- Implemented Parse integration with a local data store and push notifications.
- Created a framework for discovering users even if the app is closed.
Technologies: Swift, Parse, Bluetooth Low Energy
iOS Engineer
uSuit (via Toptal)
2014 - 2014
- Created a 3D High-Poly model viewer app for iOS (Universal).
- Implemented Dropbox integration.
- Implemented SceneKit and UIKit integration.
- Implemented mesh customization in real-time.
- Created synchronized local storage for offline use.
Technologies: Swift, Objective-C, SQLite
iOS Engineer
reTXT (via Toptal)
2014 - 2014
- Created a text messaging iOS app. Worked with a team of 3 iOS developers.
- Implemented Apache Thrift integration.
- Built a custom SQLite local database.
- Implemented multimedia messages.
- Achieved complex animations using Core Animation and Auto Layout.
- Built an API basis to use in all mobile clients.
Technologies: iOS, Objective-C, SQLite, Thrift, Core Animation
Software Engineer
iKey SRL
2013 - 2013
- Developed an iOS and iPad app for final users and admins.
- Developed the Arduino software for interacting with the iOS app and the server.
- Created and deployed the hardware solution for the project using Arduino.
- Integrated two incompatible Arduino shells using a master-slave model.
- Developed several functionalities in the back-end using PHP and SQL.
- Integrated Bluetooth low-energy allowing proximity opening for doors.
- Developed an offline solution and an on-demand synchronization with the server.
Technologies: Arduino, PHP, Objective-C, SQL, Bluetooth Low Energy
iOS Developer
Oxean
2012 - 2012
- Developed the app, "Vale Puerto", for showing company port facilities in Argentina.
- Created the app, "Vale", for displaying company facilities in Argentina.
- Supported image and video display via AVFoundation.
- Designed a custom map interface showing different spots in the VALE facilities.
- Designed a plist-based file for storing and loading map points and information.
- Implemented support for efficient scrolling around the "Vale" app.
Technologies: iOS, Objective-C
iOS Developer
Portegno Apps
2012 - 2012
- Created the "Crazy Hairstyle Studio" app.
- Developed a base framework for editing hairstyles in a realistic hairstyle salon app.
- Added features for camera support, photo editing, and screenshot export to a game.
- Created a Photoshop script for exporting hairstyles and loading them into the app.
- Integrated OpenGL and UIView successfully improving general performance.
- Added support for real-time image editing by rendering images to textures.
- Created an anchor and multi-point manipulation system for displayed objects.
- Built a multi-shading tool for blurring, coloring, and efficient rendering of images.
Technologies: iOS, OpenGL-ES, Objective-C, XML
iOS Developer
Webetico SNC
2011 - 2012
- Created a CRM app allowing customers to place orders online and offline.
- Created a multi-language app for a museum displaying information about museum exhibits.
- Integrated image synchronization on demand.
- Developed a framework for synchronizing local data with server data.
- Designed and implemented a custom grid for displaying data.
- Supported communication with an AS400 for an iOS app.
- Supported multithreaded loading of images to display in a catalogue.
- Created a trivia game that allowed prospective customers to enter their contact information.
Technologies: Objective-C, iOS, SQL

Experience

Climber Brothers (Development)
An iOS rope physics puzzle game with 4.5/5 stars review.
Free version: https://itunes.apple.com/us/app/climber-brothers-lite/id452800570?l=es&ls=1&mt=8
Battle Rush (Development)
https://itunes.apple.com/us/app/battle-rush/id662898453?mt=8
An infinite multiplayer PVP runner game.
Crazy Hair Studio (Development)
https://itunes.apple.com/us/app/crazy-hair-studio/id532879511?mt=8
A realistic hairstyle simulator.
Chinchon (Development)
https://itunes.apple.com/us/app/chinchon!/id681900861?mt=8
A Spanish card game for iOS.
Escoba de 15 (Development)
http://itunes.apple.com/us/app/escoba-de-15/id386532754?mt=8&ls=1
A Spanish card game with single and multiplayer features.
iJewels (Development)
A jewelry catalogue iPad application for Cielo Venezia.
Award for Esquilax Games (Other amazing things)
Our company was choosen from 200 indie game companies around the world for the program Chartboost University: Boot Camp and for the GDC (Game Developers Conference).

Skills

Languages
Objective-C, C#, C++, SQL, C, PHP
Frameworks
ZURB Foundation, AFNetworking, iOS SDK, Cocoa Touch, Cocoa, Core Location, Unity3D, Unity, Core Bluetooth
Libraries/APIs
Parse SDK, Flurry, Twitter iOS SDK, Dropbox API, AdColony, Facebook iOS SDK, SBJson
Tools
Adobe Photoshop, 3ds Max, Git, Xcode, TestFlight, Cinema 4D, Visual Studio, Adobe Illustrator, MAMP
Paradigms
Agile Software Development, Object-oriented Programming (OOP), XP, Model View Controller (MVC), Continuous Integration (CI)
Platforms
MapBox, Arduino, Windows, iOS, Mac OS
Storage
MySQL, SQLite
Other
Game Design, User Interface (UI)

Education

Bachelor's degree in Software Engineering
Universidad Tecnológica Nacional - Buenos Aires, Argentina
2009 - 2013

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